/*
 * Written by Cliff Click and released to the public domain, as explained at
 * http://creativecommons.org/licenses/publicdomain
 */

package hashtables.lockfree.cliffutils;

/**
 * A simple high-performance counter. Merely renames the extended
 * {@link org.cliffc.high_scale_lib.ConcurrentAutoTable} class to be more
 * obvious. {@link org.cliffc.high_scale_lib.ConcurrentAutoTable} already has a
 * decent counting API.
 * 
 * @since 1.5
 * @author Cliff Click
 */

public class Counter extends ConcurrentAutoTable {

	// Add the given value to current counter value. Concurrent updates will
	// not be lost, but addAndGet or getAndAdd are not implemented because but
	// the total counter value is not atomically updated.
	// public void add( long x );
	// public void decrement();
	// public void increment();

	// Current value of the counter. Since other threads are updating furiously
	// the value is only approximate, but it includes all counts made by the
	// current thread. Requires a pass over all the striped counters.
	// public long get();
	// public int intValue();
	// public long longValue();

	// A cheaper 'get'. Updated only once/millisecond, but fast as a simple
	// load instruction when not updating.
	// public long estimate_get( );

}
